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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

CnF

Network fault

Schindler · Altivar 312 Drive

What does CnF mean?

This fault indicates an issue with an optional communication card installed in the drive. It is a read-only fault code that remains stored even after the cause disappears and is reset only by cycling the drive's power. The specific values of this parameter depend on the type of network card.

Common Causes

  • A communication fault detected on the optional network communication card.
  • Issue with the physical connection or configuration of the network card.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Consult the manual specific to the installed network communication card for detailed troubleshooting steps.

  2. 2

    Power cycle the drive by disconnecting and reconnecting its power supply to reset the fault.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

A-17Alarm buttonCFFINCORRECT CONFIG.CFIINVALID CONFIG
Source: Schindler Altivar 312 Drive
Open Manual (Page 103)Search more codes in this manual